Out in Churchill County, NV Energy’s Sierra Solar project is racing ahead of schedule. The utility says the battery portion is already live, and the sprawling site near Fallon is stacked with solar racking and modules waiting to be bolted into place. The $1.5 billion buildout, a roughly 400-megawatt photovoltaic array paired with about 1,600 megawatt-hours of battery capacity, is now being talked about as a contender to wrap up ahead of an April 2027 target.
Speaking with the Northern Nevada Business Weekly, NV Energy vice president Tua Fale said the battery portion “came online March 20” and that foundation piles for the PV racking are already in the ground, with modules delivered to the site. Fale told the paper the project appears to be “at the very least on budget, but leaning heavily toward being under budget and early,” and said peak construction could put roughly 350 to 400 trades workers on site while general contractor Kiewit handles the installation work.
Project Scope and Permitting
NV Energy’s regulatory filings with the Nevada Public Utilities Commission describe Sierra Solar as a 400 MW solar plant co-located with a dispatchable 400 MW, four-hour battery energy storage system, a setup that provides roughly 1,600 MWh of storage. Those filings show the utility targeting commercial operation of the generating portion in April 2027. The project is being developed by NV Energy using an EPC delivery approach and is designated as a critical reliability resource for Northern Nevada.
The Bureau of Land Management’s final environmental assessment says the utility’s work would cross about 55 acres of public land, and it analyzed roughly 2,800 acres of adjacent private land for interconnection and support infrastructure. Permitting and scope details are laid out in environmental documents from the Bureau of Land Management.
Transmission and Who Gets the Power
Company materials and local reporting say the site was picked largely for its access to heavy-duty transmission that already serves major industrial customers. NV Energy’s plans tie Sierra Solar into the Valmy–East Tracy 345 kV corridor so the output can feed load pockets including the Tahoe-Reno Industrial Center, Fernley and Fallon with relatively low losses. That deliverability is a key part of the utility’s argument for a single large, utility-owned project instead of stitching together several smaller contracts.
Costs, Tariffs and the PUC Cap
The Public Utilities Commission earlier approved a $1.5 billion construction cap for Sierra Solar when it signed off on NV Energy’s broader plan to retire and repower coal units and add renewable capacity. The commission also said customers could receive credits if the utility fails to meet the approved schedule. Reporting at the time noted that the order both authorized NV Energy to move forward and limited how much the company can recover from ratepayers, according to the Las Vegas Review-Journal.
Meanwhile, industry watchers say swings in U.S. trade policy have added some procurement heartburn. Renewed tariff measures and shifting exclusions have pushed buyers to front-load equipment purchases or swallow higher duties on modules and certain battery components. Recent coverage in Manufacturing Dive highlights how those Section 301 tariff changes are rippling through solar and storage supply chains.
Jobs, Schedule and Expansion Potential
NV Energy and local officials say onsite employment could climb into the low hundreds during the busiest mechanical and civil phases, with many suppliers already active in the area. The utility told regulators the battery was scheduled to come online this spring while construction of the photovoltaic array continues into 2027.
NV Energy has also kept the door open for more. The company has retained an option to expand Sierra Solar in a second phase that could roughly double capacity if future demand and project economics justify it. Those timing and expansion details come from the utility’s regulatory filings and project planning records.
Bottom Line
Sierra Solar is shaping up as one of Northern Nevada’s biggest renewable builds, with large-scale storage already active, major equipment staged on site and a transmission plan tailored to fast-growing industrial load. Officials say the mix of size, location and a tight construction timeline could translate into lower per-megawatt costs for customers, as long as supply-chain surprises and tariff swings do not force the project off its current track.
